Experimental study on thermodynamic performance and sustainability of a heavy-duty vehicle under cold start C-WTVC

Abstract

In the context of increasingly serious carbon emissions and energy issues, it is key to solve the emission and performance problems of vehicle under cold start. In this study, environmental cost index was introduced to evaluate the weight of environmental impact of emissions to determine the focus of emission optimization under cold start. To this end, the energy flow experiment of heavy commercial vehicle cold start under C-WTVC was carried out. In addition, the steady-state bench test of the engine of the experimental vehicle was carried out. Through comparative analysis of sustainability parameters, it provides ideas for improving energy utilization under transient cold start conditions. The results demonstrate that the sustainability index is higher around 4.3 under high-speed steady conditions. And the performance is poor under transient conditions, which is only around 1.5. In addition, environmental costs are more sensitive to changes in CO and NO emissions. What's more, it should be pointed out that engine stability in the shifting process is especially important for the carbon emissions and energy utilization.

Keywords

• Energy analysis
• Exergy analysis
• Sustainability
• Cold start
• C-WTVC
• Cost analysis